public async void DeletePlanet_Ok() { //Arrange var planet = new Planet { Id = Guid.NewGuid(), Name = "A-1" }; m_repositoryMock.Setup(t => t.SearchAsync(It.IsAny <Pagination>(), It.IsAny <Ordering>(), It.IsAny <IFilter <Planet> >())) .ReturnsAsync(new Tuple <int, List <Planet> >(1, new List <Planet> { planet })); //Act await m_planetService.DeletePlanetAsync(planet.Id); //Assert m_repositoryMock.Verify(t => t.DeleteAsync(It.IsAny <Planet>()), Times.Once); }